Not that we have finished running the parts on the machining centers it is time to do the final fit up. Using the 1018 trunions that we made a hole was drilled in it to allow alignment with the button pressed into the receiver. Then the blocks were tested to see if the fit up […]

In this post we are going to look at how the badly cut up and rusted lower portion of the MP-44 receiver was repaired. You can see in the first photo the condition of the under side of the lower front portion of the receiver.

With this post I am going over a few of the problems that have occurred during the machining of op5 on the 4140 hardened trunions. We ran into a snag while doing this op. A problem that did not occur on the 1018 steel parts.

This is the second in a series of post of Pete, a friend of gun lab, building his semi-auto MP-44. From our previous post you could see the absolutely dismal condition of the cut up receiver pieces that Pete had to work with.

We are making head way on the VG1-5. There are a lot of small steps that take a great deal of time to accomplish. In this case it is the two hole on the bolt that lock it into the upper receiver and hold the firing pin in place.